He needs to send some to guys like 6x6, etc free and let them try them to spread the word.

Those kind of groups with ANY muzzleloader and bullet are pretty hard to believe. They sound like they should be accurate, but I wouldn't expect that kind of accuracy in 99.9% of rifles out there. If they will consistently shoot 2.5 inches at 200 yards in a variety of guns, that would be a great bullet indeed.